Split type temperature and pressure safety valve
Through the split design and hot forging stamping process, the problem of limited pressure bearing of existing temperature pressure safety valves is solved, and the appearance of the fine and smooth valve body and efficient pressure relief function are achieved, which is suitable for economical mass production.
Patent Information
- Application Number
- CN202420337782.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-23
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-02-23
AI Technical Summary
Due to the inherent defects of the casting process, the existing temperature pressure safety valves have rough surfaces, internal air holes, and looseness, resulting in limited pressure bearing and cannot meet the needs of efficient pressure relief protection.
Using a split design, the copper valve body is separately made from the temperature measuring rod assembly and is connected through the temperature measuring rod baffle. The copper valve body adopts a hot forging stamping process to simplify the processing technology, reduce costs, increase pressure, and passes through the spring seat. Components and sealed balls enable safe pressure relief.
It realizes a fine and smooth valve body appearance, increases the pressure bearing of the copper valve body, simplifies the production process, reduces costs, is suitable for large-scale production, and ensures the safe pressure relief function.
Smart Images
Figure CN222297079U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of safety valves, in particular to a split-type temperature and pressure safety valve. Background Art
[0002] The working principle of the temperature and pressure safety valve is: when the temperature rises, the paraffin melts, the pressure increases, and the piston structure pushes the sealing structure and the valve stem. Under the premise of overcoming the internal compression spring pressure, the valve stem is forced to move outward, pushing open the pressure relief structure, thereby discharging water, relieving pressure, and cooling down to protect the water heater.
[0003] Existing temperature and pressure safety valves usually use a casting process to integrate the valve body and the temperature measuring rod component. However, the casting process has inherent defects such as rough surface, internal pores, looseness, and sand holes, which result in limited pressure bearing of the valve body. Utility Model Content
[0004] The purpose of the utility model is to provide a split temperature and pressure safety valve in which a copper valve body and a temperature measuring rod assembly are separated and connected through a temperature measuring rod baffle, thereby increasing the bearing pressure of the copper valve body, obtaining a fine and smooth valve body appearance, simplifying the processing technology, reducing costs, and facilitating economical mass production.
[0005] In order to achieve the above object, the utility model is implemented through the following technical solutions:
[0006] A split temperature and pressure safety valve comprises a copper valve body, a temperature measuring rod assembly and a temperature measuring rod baffle. A spring seat assembly is arranged within the copper valve body. The spring seat assembly extends out of the copper valve body and is connected and fixed to a handle. The copper valve body and the temperature measuring rod assembly are connected via the temperature measuring rod baffle.
[0007] Furthermore, the temperature measuring rod assembly includes a barrel and a sealing ball, a valve stem, a valve cover and a spring inside the barrel. The barrel is filled with solid paraffin and sealed by a sealing ball. The sealing ball abuts against a valve stem. The valve stem extends out of the barrel. The middle part of the valve stem is slidably connected to the valve cover. A spring is sleeved on the valve stem between the valve cover and the sealing ball.
[0008] Furthermore, the spring seat assembly includes a pull rod, a nut, a disc screw, a spring seat and a sealing gasket connected in sequence from the outside to the inside. The spring seat assembly is connected and fixed to the internal components of the copper valve body. The pull rod passes through the spring seat through the nut and the disc screw, and the spring seat and the pull rod are tightly connected through the sealing gasket.
[0009] Compared with the prior art, the utility model has the following advantages:
[0010] The utility model is a split-type temperature and pressure safety valve, in which the copper valve body and the temperature measuring rod assembly are made separately, and the two are connected by a temperature measuring rod baffle, so that the copper valve body has a higher pressure-bearing capacity and a fine and smooth valve body appearance. The copper valve body adopts a hot forging stamping process, so that the valve body structure is fine and the outer surface is smooth, the copper valve body has a higher pressure-bearing capacity, and the processing technology is simplified, which is conducive to economical mass production; the temperature measuring rod baffle is a stamping part, the process is simple, the cost is reduced, and it is suitable for mass production. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic cross-sectional view of the overall structure of the utility model.
[0012] Figure 2 It is a schematic diagram of the safety valve of the utility model in the open state.
[0013] Figure 3 It is a schematic diagram of the structure of the temperature measuring rod assembly of the utility model.
[0014] Figure 4 It is a schematic diagram of the temperature measuring rod baffle structure of the utility model.
[0015] Figure 5 It is a schematic structural diagram of a spring seat assembly of the utility model.
[0016] Figure numerals: 1. copper valve body; 2. temperature measuring rod assembly; 21. bobbin; 22. sealing ball; 23. valve stem; 24. valve cover; 25. small spring; 26. paraffin; 3. temperature measuring rod baffle; 4. spring seat assembly; 41. pull rod; 411. rod head; 412. rod body; 42. nut; 43. disc screw; 44. spring seat; 45. sealing gasket; 46. large spring; 5. handle; 6. cover; 7. sealing ring; 8. nameplate cover. DETAILED DESCRIPTION
[0017] The embodiments of the present utility model are described in further detail below in conjunction with the accompanying drawings.
[0018] like Figure 1 As shown, a split temperature and pressure safety valve includes a copper valve body 1, a temperature measuring rod assembly 2 and a temperature measuring rod baffle 3. A spring seat assembly 4 is arranged inside the copper valve body 1. The spring seat assembly 4 extends out of the copper valve body 1 and is connected and fixed to a handle 5. The copper valve body 1 and the temperature measuring rod assembly 2 are connected as follows: Figure 4 The copper valve body 1 and the temperature measuring rod baffle 3 are connected. The copper valve body 1 and the temperature measuring rod baffle 3 play the role of supporting and connecting various components.
[0019] like Figure 3As shown, the temperature measuring rod assembly 2 includes a barrel 21 and a sealing ball 22, a valve stem 23, a valve cover 24 and a small spring 25 in the barrel 21. The barrel 21 is filled with solid paraffin 26 and sealed by the sealing ball 22. The other side of the sealing ball 22 abuts against a valve stem 23. The valve stem 23 extends out of the barrel 21. The middle part of the valve stem 23 is slidably connected to the valve cover 24. The valve cover 24 is engaged with the inner wall of the barrel 21. A small spring 25 is sleeved on the valve stem 23 between the valve cover 24 and the sealing ball 22.
[0020] like Figure 5 As shown, the spring seat assembly 4 includes a pull rod 41, a nut 42, a disc screw 43, a spring seat 44 and a sealing gasket 45 which are sequentially connected from outside to inside. The spring seat assembly 4 is sleeved with a large spring 46, that is, the pull rod 41 is sleeved with a large spring 46. The spring seat assembly 4 is connected and fixed to the internal components of the copper valve body 1, and the pull rod 41 passes through the spring seat 44 through the nut 42 and the disc screw 43. The spring seat 44 and the pull rod 41 are in close contact through the sealing gasket 45. Preferably, the pull rod 41 includes a rod head 411 and a rod body 412, the rod head 411 and the rod body 412 are separately arranged, one end of the rod body 412 extends out of the copper valve body 1 and is connected and fixed to the handle 5, the rod body 412 and the copper valve body 1 are fastened by a cover 6, a sealing ring 7 is provided between the cover 6 and the copper valve body 1, and a nameplate cover 8 can also be provided on the outside of the cover 6, and a copper nut 42 is screwed on the other end of the rod body 412; the spring seat 44 is connected with the rod head 411, the outer end face of the rod head 411 has an increased outer diameter and abuts on the spring seat 44, the outer end face of the rod head 411 is in close contact with the spring seat 44 through a sealing gasket 45, the disc screw 43 is screwed into the spring seat 44 and abuts against the rod head 411; the disc screw 43 can be screwed into the copper nut 42 under pressure, thereby pushing the rod body 412 to push the handle 5 outward to achieve pressure relief.
[0021] The working principle of the utility model is as follows: Figure 2 As shown, after the temperature measuring rod assembly 2 senses that the water temperature has reached a predetermined temperature, the solid paraffin 26 in the barrel 21 expands and liquefies due to the heat and pushes the valve stem 23 through the sealing ball 22. The valve stem 23 then lifts up the spring seat assembly 4, thereby opening the temperature and pressure safety valve, and discharging the heat and pressure in the valve body out of the valve body, thereby achieving a safe pressure relief effect; when the water temperature drops and is sensed by the temperature measuring rod assembly 2, the temperature of the liquid paraffin 26 in the barrel 21 drops accordingly, the paraffin 26 solidifies and the volume decreases, and the valve stem 23 pushes the sealing ball 22 to retract under the action of the restoring force of the small spring 25 in the barrel 21. At this time, the spring seat assembly 4 falls into place under the action of the restoring force of the large spring 46 in the copper valve body 1.
[0022] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the concept of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.
Claims
1. A split temperature and pressure safety valve, comprising a copper valve body, a temperature measuring rod assembly and a temperature measuring rod baffle, a spring seat assembly is arranged inside the copper valve body, the spring seat assembly extends out of the copper valve body and is connected and fixed to a handle, characterized in that: The copper valve body is connected to the temperature measuring rod assembly through a temperature measuring rod baffle.
2. A split temperature and pressure safety valve according to claim 1, characterized in that: The temperature measuring rod assembly includes a barrel and a sealing ball, a valve stem, a valve cover and a spring inside the barrel. The barrel is filled with solid paraffin and sealed by a sealing ball. The sealing ball abuts against a valve stem. The valve stem extends out of the barrel. The middle part of the valve stem is slidably connected to the valve cover. A spring is sleeved on the valve stem between the valve cover and the sealing ball.
3. A split temperature and pressure safety valve according to claim 1, characterized in that: The spring seat assembly includes a pull rod, a nut, a disc screw, a spring seat and a sealing gasket connected in sequence from the outside to the inside. The spring seat assembly is connected and fixed to the internal components of the copper valve body. The pull rod passes through the spring seat through the nut and the disc screw. The spring seat and the pull rod are in close contact through the sealing gasket.